WARNING
With the plugin
Query Monitor installed, I noticed many of the plugins from Festingers vault call home.
Example:
Tbh I'm quite disappointed and somewhat troubled. I was under the impression that Deleted member 752298 does provide properly "configured" plugins.
For customers sitting in countries with strict laws this is rather worrying.
Here's how you can check if your plugins are affected:
1. Install and activate
https://wordpress.org/plugins/query-monitor/
2. Go to the plugins page in your WP dashboard
3. Mouse over the query monitor figures in the top bar and click on HTTP API Calls like shown in the following screenshot:
4. Check the URL and Caller columns for Plugins you don't want to call home to the listed URLs